Nonlinear solid mechanics: applications to loading of structures in damaged materials

摘要

Nowadays the damage and failure of the material are of critical interest to designers of engineering structures, as there is a lack of methods for accurate failure prediction and damage analysis. Especially for early stages of the design process, a quick way of estimating material behavior is needed. There is a need for a material model coupled with a damage evolution law. In the paper a damage model, based on continuum damage mechanics, is presented. The material law is implemented computationally as a user defined subroutine (UMAT) in a commercially available FEM package Simulia Abaqus. The active damage accumulation zone for rod specimen is analyzed. Distribution of each damage component is given.